231301233 has 6 divisors (see below), whose sum is σ = 334101794. Its totient is φ = 154200816.

The previous prime is 231301223. The next prime is 231301237. The reversal of 231301233 is 332103132.

It can be written as a sum of positive squares in only one way, i.e., 221771664 + 9529569 = 14892^2 + 3087^2 .

It is not a de Polignac number, because 231301233 - 2¹⁸ = 231039089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231301237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12850060 + ... + 12850077.

Almost surely, 2^231301233 is an apocalyptic number.

It is an amenable number.

231301233 is a deficient number, since it is larger than the sum of its proper divisors (102800561).

231301233 is a wasteful number, since it uses less digits than its factorization.

231301233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25700143 (or 25700140 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 231301233 is about 15208.5907631181. The cubic root of 231301233 is about 613.8458385298.

Adding to 231301233 its reverse (332103132), we get a palindrome (563404365).

The spelling of 231301233 in words is "two hundred thirty-one million, three hundred one thousand, two hundred thirty-three".